Control apparatus for radio receiving instruments



April 25, 1933.

J. E. WHITE CONTROL APPARATUS FOR RADIO RECEIVING INSTRUMENTS Filed Oct.1, 1930 mmmmim mmlil'mlfilui INVENTOR WH/ TE BY ATTORNEY JAY, E. WHITE,

for. connecting the operating members with line 4-4 of Patented Apr. 25,1933 UNITED STATES nErRoIT, MICHIGAN, A coEroEA'rIoNoF DELAWARE 1 ornE'rEoIr, MICHIGAN, ASSIGNoR To CHRYSLER coEro arIonfoE 7CONTROLVIAPPABATUS FOR nanro RECEIVING iNSTRUMENTS Application filedOctober 1, 1930.. Serial No. 485,802.

The main objects of the invention are to provide control apparatus whichhas its operating members arranged in a compact unit; to provide acompact operating unit for radlo control apparatus which is particularlyadapted for installation on the instrument board of a vehicle; toprovide flexible means the controlapparatus; and to provide means ofthis kind which can be'readily conditioned so as to, adapt the apparatusfor installation in vehicles ,having instrument boards of variousconstructions and inclina tions and which are locatedat diverseddistances from the receiving set.

An illustrative embodiment ofimy inven tion is shown in inwhichz Fig. 1is a fragmentary vertical section of avehicle body showing a radioreceiving set which embodies my improved control apparatus. V p w I Fig.2'is a fragmentary vertical section of a radioreceiving set showingvthecontrol apparatus in=detail. 7 v f f' Fig. 8 is a transverse verticalsectiontaken on the line 33 of Fig.52.

Fig. 4 is a vertical section Fig. 2. V n Fig; 5 is a side elevation ofan operating the accompanying drawing,

taken on the unit for a radio'co'ntrol apparatus which ems vice, such asa condenseror .variometer including a stationary part 9 and a rotatablepart 10, is mounted in the casing in spaced relation to the rheostatfi.For the purpose of illustration, these two instruments are shown to beout of alinement, but it is intended that they be understood to besubstantially in alinement with each other. a v The rotatable anattaching member 42.

part 10 of the device has ashaft 11 on which a toothed pulley orsprocket, 12 is mounted. Journaled in the casing 1 is a shaft 13 havinga toothed pulley'or sprocket 14 thereon aroundwwhich a belt15risdisposed. The belt 15 has apertures for receiving the teeth of theplleys 12 and 14 audit also ex tends around the latter pulley. I f sMounted on'the instrument board 16of the vehicle is adisc-shapedsupp'ort 17 which has aftubular boss 18 extending inwardlythrough an aperturein the instrument board. Achannels'hapedbracketlQhavingadownwardlyextending side throughwhichspaced apertures 21 and 22 are formed is mounted on the outerperiphery of the boss 18 which is threaded internally 1 so as to receivean externally threaded bearing member23 having; an enlarged, head 24.ywhich-the bracket 19is clamped in place. I j A tubularv stem 25extending throughthe instrument board 16 is. journalediin the bear: ingmember 23 and has a knob 26 on itsouter end and a worm 27 on its innerend portion on which a nut 28 is threaded. flexible cable, 29 is securedat. one .end tojthe nut 28 and at its other end to a block .30 which is.

carried by the belt 15.. Thisjceible extends through a flexibletube 31which is secured at its forward extremity ,inthe aperture 220f thebracket 19 by an attaching member 32. The inner end of the flexibletubeSl is secured between the jaws of a clamp 34 ,mountedon a support 35in the casing I p Concentrically arranged in the tubular member 25 isanoperating element which includes a shiftable stem 36 having a knob 37 onits outerend. .The' inner end portion of r the stem 36 is attached to aflexible cable 38 which extends centrallythrough theworm 27 and throughthe aperture 21 in the bracket 19. The cable 38 is attached to thesliding contact? of the rheostat'by a screw 39 and the main portions ofthis, cable are also inclosed within a flexible tubing 40 which issecured at its inner end to the support 8 of the sliding contact by .anattaching member {l1 and is f astened at its outer end to the,downwardly extending side 20 of the bracket 19 by A cup-shaped dial 43is journaled on the periphery of the support 17 and is provided.

lated by rotating the knob 26 and stem 25 so as to move the nut 28linearally. This movement of the nut shifts the cable 29 forwardly andrearwardly which. in' turn actuates the belt 15 turning the rotatablepart of the tun- 26 ing device. The'rheostat'5 is regulated by shiftingthe knob 37 and'the stem inwardly and outwardly with" respect'to thetubular stem 25. In this construction, the operating elements by whichthe rheostat and tuning device are selectively regulated are combined inacompact un'itwhich may be conveniently mounted on the instrument boardof'a vehicle. The flexible cables 29 and 38 by which the elements of theoperating unit are connected with the control apparatus of the tuningdevice and rheostat, respectively, may be" made of any suitable lengthso as to conform with the construction of the particular vehicle forwhich the apparatus-is intended. These flexible connecting members allowthe compact control unit to be arranged in misalignment relative tolthereceiving set and they permit regulatingapparatus of substantial uniformdesign to be'conveniently installed in vehicles having instrument boardsof di versed inclinations.

In the form of my'invention shown in Fig. 5-the rheostat regulatingmechanism is identi cal to that shown in FigsQl to 4 inclusive. Itincludes aknob 37' on a stem 36which is slidably mounted in a rotatablecontrol element 26. The rotatable element 26 includes a worm 51 whichhas both advance and return threads 52 and 53, respectively. Threaded onthe worm 51 is a'nut 28' to which a cable 29 is attached. The cable 29"extends through an aperture in the downwardly extending side 20 of abracket 19' which is mounted on the instrument board 16, in the mannerdescribed above, by a bearing member having'a head 24. This cableoperates a belt, not shown, of a tuning devicein the manner describedabove. Rotatably mounted at 54,0n the face of the instrument board 16'is a dial 55 having, external teeth 56 on its periphery which mesh witha pinion 57 that is rigidly secured to the worm 51. The instrument board16 has a slot 58 registering with the dial and witha light bulb 49 whichis supported on the bracket 19. With this form of my inventiomthe nut 28is, shifted forwardly and rearwardly by continuous rotation of the knob26 and .worm 51 in a single direction. This action causes the tuningdevice to be rotatedin one direction to the full extent of its capacityand then to be rotated in the other direction. The shiftable'operatingelement regulates the rheostat in the manner described in connectionwith the Figs. 1 to 4 inclusive. q Although but two specific embodimentsof this invention have herein been shown and described, it will-beunderstood that various changes in the size, shape and arrangement ofparts maybe'made without departing from the spirit of my invention andit is not my intentionto limit its scope other than b theterm'of theappended claims.

I claim:

-1. Ina radio receiving apparatus includ ing a rheostat and a tuningelement, control apparatus for regulating said rheostat and tuningelement including a pair of concentric operating'members, oneof saidmembers being rotatably 'adjustable'jand the other being slidablyadjustable independently of said rotatably adjustable member. I

2. .In a radio receiving apparatus including a rheostat and a tuningelement,c0ntrol apparatus including a 7 slidably adjustable operatingmember for regulating said rheo stat and "a concentric'rotatablyadjustable operating lmemberoperable independently of said slidablyadjustable member for regulating'csaid tuning element. V

3. In a radioreceiving apparatus including a pair ofvariableinstruments, control apparatus for selectively regulating saidinstruments including a pairof concentric operating members, one of saidmembers being shii'table, and the other being rotatable independently'ofeach other. v

4. In a radio receiving apparatus including a pair of variableinstruments, control apparatus for said instruments including a pair offlexible shiftab'le members, and a manual operating unit including ashiftable element for actuating one of said flexible members'and aconcentric rotatable element supporting said shiftable element foractuating the other flexible member.

5. In a radio receiving apparatus including a pair of variableinstruments, control apparatus for said instruments includin'gxa pair offlexible shiftable members, a manual operating unit including ashiftable element for actuating one of said flexible members anda'concentric rotatable element supporting said shirtable element foractuating the other flexible member, and indicating means operable bysaid rotatable element for disclosing the setting of the instrumentwhich said rotatable 'member regulates.

6. In a radio receiving apparatus including a pair of variableinstruments, control apparatus for said instruments including a pair ofshiftable members, a nut on one of said shiftable members, a rotatableoperating element having a worm threaded in said nut for actuating thelatter shiftable member, and a second operating, element shiftablymounted on said rotatable operating element and attached to the othershiftable member for actuating the same.

7 In a radio receiving apparatus including a pair of variableinstruments, control apparatus for said instruments including a pair ofshiftable members, a nut on one of said shiftable members a rotatableoperating element, a worm on said rotatable operating element threadedin said nut and having advance and return threads whereby saidnut, andthe shiftable member upon which it is mounted are shifted indiametrically opposite directions by continuous rotation of saidrotatable operating element, andan 1 operating element shiftably mountedon, said rotatable operating element and attached to the othershift-able member for actuating the same.

8. In a radio receiving apparatus includ- QTKradio receivingsetincluding a cas-j ing having a pair of variable instruments therein,control apparatus for said instruments located in said casing, a supportspaced I from said casing, an operating unit mounted on said supportincluding a rotatable manually operable element and a shiftable manuallyoperable element, the latter element being shiftably mounted on saidrotatable element, a flexible cable extending into said casing andconnected at one end with the control apparatus of one instrument and atits other end with said shiftable operating element, means on therotatable elementfor converting rotary movement thereof to linealmovement, and a flexible cable secured at onevend to said means and atits other end to the control apparatus of the other instrument.

JAY E. WHITE. I

